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All Journal Jurnal Geliga Sains: Jurnal Pendidikan Fisika Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) BAREKENG: Jurnal Ilmu Matematika dan Terapan PROMINE Jambura Journal of Mathematics Kumawula: Jurnal Pengabdian Kepada Masyarakat Journal of Appropriate Technology for Community Services Stannum : Jurnal Sains dan Terapan Kimia Abimanyu: Journal of Community Engagement Pekodimas : Jurnal Pengabdian Kepada Masyarakat Jurnal Riset Fisika Indonesia Time in Physics: Journal for Theoretical, Instrumentation, Material-Molecular, and Education Physics

Herman Aldila

Department Of Physics, Universitas Bangka Belitung

Author-ID : 224149

Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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RANCANG BANGUN ALAT PENGERING OTOMATIS KERUPUK KEMPLANG DI DESA PENYAK Widodo Budi Kurniawan; Fitri Afriani; Herman Aldila; Yuant Tiandho
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 (2021): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v4i1.30037

Kegiatan pengabdian berupa Iptek bagi Masyarakat (IbM) merupakan salah satu penerapan Tri Dharma Perguruan Tinggi. Dengan adanya kegiatan pengabdian IbM, maka diharapkan akademisi dapat berinteraksi secara langsung dengan masyarakat. Lokasi yang menjadi sasaran kegiatan IbM adalah Desa Penyak Kecamatan Koba Kabupaten Bangka Tengah yang mayoritas mata pencaharian penduduknya adalah sebagai nelayan atau petani. Hasil tangkapan nelayan sebagian diolah menjadi kerupuk kemplang. Masalah yang muncul adalah bahwa proses pengeringan masih menggunakan cara tradisonal yaitu melalui penjemuran secara langsung di bawah terik matahari, sehingga proses pengeringan masih bergantung pada cuaca. Salah satu upaya untuk membantu masyarakat, khususnya kalangan kelompok usaha mikro di bawah naungan Badan Usaha Milik Desa (BUMDes) di Desa Penyak dalam mengatasi permasalahan pengeringan kerupuk kemplang adalah melalui sosialisasi pengeringan kerupuk kemplang menggunakan alat pengering otomatis. Kegiatan sosialisasi akan dilanjutkan dengan transfer teknologi tepat guna dan penyerahan alat pengering otomatis sehingga masyarakat dapat memanfaatkan teknologi tersebut secara langsung untuk meningkatkan kualitas produksi kerupuk kemplang. Hasil evaluasi menunjukkan bahwa kegiatan sosialisasi dan penyerahan alat pengering otomatis dimanfaatkan dengan baik dan bermanfaat bagi masyarakat.

ANALYSIS OF INFLUENCE OF ACTIVATOR CONCENTRATION ON CHARACTERISTICS OF ACTIVATED CARBON FROM KETAPANG SHELL (Terminalia Catappa) BASED ON IMAGE PROCESSING METHOD Herman Aldila; Megiyo Megiyo; Fitri Afriani; Yuant Tiandho
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 6, No 1 (2018)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Activated carbon from ketapang shell (Terminalia Catappa) has been successfully synthesized using dehydration-carbonization method. Activated carbon was conducted by immersing with sulphuric acid and followed by carbonization at 600oC for 2 hours. Pore characteristics were determined using imageprocessing methods of activated carbon micrographs based on parameters of area and caliper length. From the area approximation method obtained that the maximum pore size estimate was 5,69 μm at activator concentration 3% while the minimum was 4,88 μm at activator concentration 11% activator concentration respectively. At the other hands, caliper length approximation method obtained estimation of maximum pore size that was equal to 9,09 μm at activator concentration 3% and its minimum that was equal to 7,35 μm at activator concentration 7%. The porosity of the activated carbon from ketapang shell increased with the increase of sulfuric acid concentration and the highest value reached 24.96%.

Sintesis Karbon Aktif Tempurung Ketapang (Terminalia catappa) Sebagai Adsorben Minyak Jelantah Megiyo Megiyo; Herman Aldila; Fitri Afriani; Robby Gus Mahardika; Sito Enggiwanto
Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2017: Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) 2017
Publisher : Universitas Sebelas Maret

Abstract: Activated carbon is the most common adsorbents used in regeneration of cooking oil process. Waste frying oil is a residual of frying that has been destructed due to repeated use. For reusable, it must through by oil regeneration process to eliminate impurities and free radicals. One of the abundant biomass and feasible to be activated carbon is ketapang shell. The synthesis of activated carbon used activator H2SO4 11% with ratio 1: 4 (w / v) followed by thermal activation at 650oC for 2 hours. Activated carbon is then mixed with waste frying oil with variations of 5%, 7.5% and 10% and is left for 24 hours. As an antioxidant to free radicals added extract iding-iding (Stenochlaena palustris) of 5%. Based on the observation data SEM pore distribution on activated charcoal fairly evenly with the average pore width around 10 mm. The results of acid number and free fatty acid test showed that the greater amount of activated carbon used, the value of acid number and free fatty acid content will decrease. The optimum condition was obtained on 10% active carbon and 5% extract with 0.8% acid value and 0.78% free fatty acid content. Abstrak: Karbon aktif merupakan salah satu adsorben yang umum digunakan dalam upaya peningkatan regenerasi minyak jelantah. Minyak jelantah merupakan limbah hasil sisa penggorengan yang telah terdestruksi akibat pemakaian yang berulang-ulang. Untuk dapat digunakan kembali minyak jelantah harus mengalami proses regenerasi minyak untuk menghilangkan impuritas dan radikal bebas. Salah satu biomassa yang begitu melimpah dan layak untuk dijadikan karbon aktif adalah tempurung ketapang. Sintesis karbon aktif tempurung ketapang dilakukan dengan menggunakan aktivator H2SO4 11% dengan perbandingan 1:4 (b/v) dilanjutkan dengan aktivasi termal pada temperatur 650oC selama 2 jam. Karbon aktif yang diperoleh kemudian dicampurkan dengan minyak jelantah dengan variasi 5%, 7,5% dan 10% dan dibiarkan selama 24 jam. Sebagai penangkal radikal bebas ditambahkan ekstrak iding-iding (Stenochlaena palustris) sebesar 5%. Berdasarkan hasil pengamatan data SEM sebaran pori pada arang aktif tempurung ketapang cukup merata dengan lebar pori rata-rata berkisar 10 mm. Hasil uji bilangan asam dan kadar asam lemak bebas menunjukkan bahwa semakin besar jumlah karbon aktif yang digunakan maka nilai bilangan asam dan kadar asam lemak bebas akan semakin menurun. Kondisi optimum diperoleh pada komposisi 10% karbon aktif dan 5% ekstrak iding-iding dengan nilai bilangan asam 0,8% dan kadar asam lemak bebas 0,78%.

Ekstraksi Kitosan dari Limbah Cangkang Udang sebagai Adsorben Ion Logam Cu pada Air Kolong Timah Bangka Herman Aldila
PROMINE Vol 8 No 2 (2020): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/promine.v8i2.2070

This study aims to analyze the effect of NaOH concentration on deacetylation step on the chitosan adsorption for Cu metal ions in Bangka tin kolong’s water. Extraction of chitosan was carried out in four steps: deproteinization, demineralization, decolorization and deacetylation of chitin. The effect of NaOH concentration on deacetylation process was studied. The results shown that the increase of NaOH concentration from 20% to 60%, the chitosan DD increased. The diffusion rate of OH- causes increment of OH- attack to the amino group thus realizing the effective deacetylation of chitin. The metal content of Cu in this study reached 0.32 ppm. Adsorption of chitosan on cu metal ions reduced the dissolved levels reaching an average of 99.67% from the initial content. The content of the hydroxyl group in chitosan causes the forming reaction of hydroxide compounds from dissolved Cu metal ions. The Cu hydroxide compound will separately form and form a precipitate. The greater the deacetylation degree value lead increase of hydroxyl group content and causing the increase of Cu metal ions adsorption.

SOSIALISASI TEKNIK PENYIMPANAN PRODUK HASIL TANGKAPAN LAUT DENGAN METODE BEKU DI DESA PENYAK Fitri Afriani; Yekti Widyaningrum; Widodo Budi Kurniawan; Herman Aldila; Yuant Tiandho
Journal of Appropriate Technology for Community Services Vol. 1 No. 2 (2020)
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jattec.vol1.iss2.art8

In this paper, the location that is targeted for community service activities is Penyak Village, Koba Sub-District, Central Bangka Regency. The majority of the profession of the Penyak Village community are fishermen because the village is directly adjacent to the South China Sea. Maritime resources in Penyak Village are quite abundant including various types of fish, shellfish and small crab. But most people who market these resources have not used techniques for storing fishery products. Therefore, it is feared that the fishery products will decline in quality. The solution offered to this community service is the socialization of frozen fishery product storage. In addition, in order for the community to directly utilize it, the freezer box equipment was provided to Penyak Village. Through the evaluation process, it is known that the freezer box provided can be utilized by Penyak Village community, especially for storing food products.

Pelatihan Pemanfaatan Limbah Plastik Menjadi Berbagai Kreasi Daur Ulang Bagi Masyarakat Desa Penyak Yuant Tiandho; Herman Aldila; Yekti Widyaningrum; Tri Kusmita; Anisa Indriawati; Widodo Budi Kurniawan; Fitri Afriani
Journal of Appropriate Technology for Community Services Vol. 2 No. 2 (2021)
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jattec.vol2.iss2.art2

As an archipelago, handling plastic waste in the Province of Bangka Belitung Islands is an aspect that needs to be taken seriously. Apart from being focused on developing tourist areas, plastic waste will easily be carried to the sea and prone to be degraded into microplastics, often consumed by marine animals. This community service activity focuses on Penyak Village, Kec. Koba, Kab. Central Bangka, Bangka Belitung Islands. To solve the plastic problem in that location, the community service team conducted training for the community, especially for Pendidikan Kesejahteraan Keluarga (PKK) members, related to processing plastic waste into various recycled creations such as bags, pencil cases, and different kinds of souvenirs. The training program is carried out by providing materials and direct training to increase the understanding and skills. To broaden people's insights, the team conducted training with the Ecoplantstic start-up, which focuses on developing waste-based products. Through the evaluation, it is known that the training provided can improve the knowledge and skills of the community in processing plastic waste into various recycled creations, and several participants plan to develop the skills acquired for entrepreneurial purposes.

Pengaruh Temperatur Deproteinasi Pada Deasetilasi Kitin Cangkang Udang Krosok (Penaeus semisulcatus) Terhadap Adsorpsi Logam Besi (Fe) Herman Aldila; Asmar Asmar; Verry Andre Fabiani; Desy Yuliana Dalimunthe; Megiyo Megiyo; Riko Irwanto
Stannum : Jurnal Sains dan Terapan Kimia Vol 2 No 1 (2020): April
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v2i1.1722

Penelitian ini bertujuan menganalisis pengaruh variasi temperatur deproteinasi pada daya adsorbsi kitosan udang krosok (Penaeus semisulcatus) terhadap logam besi (Fe) pada air kolong bekas penambangan timah timah di Pulau Bangka. Bahan baku kitosan yang digunakan dalam penelitian ini merupakan limbah cangkang udang krosok dari industri rumah tangga pembuatan ebi. Kitosan limbah cangkang udang ebi telah disintesis dalam tiga tahapan meliputi: deproteinasi, demineralisasi, dekolorisasi dan deasetilasi. Pada penelitian ini proses sintesis menggunakan variasi temperatur deproteinasi masing-masing: 30oC, 60oC, dan 90oC. Berdasarkan analisis data FTIR, dapat ditentukan nilai derajat deasetilasi sampel berturut-turut sebesar: 32,01% ; 30,94% dan 28,74%. Peningkatan temperatur deproteinasi menyebabkan nilai derajat deasetilasi kitosan menjadi menurun. Penurunan ini diakibatkan oleh rusaknya struktur kitin pada sampel akibat temperatur yang meningkat. Kandungan logam Fe pada air kulong yang digunakan dalam penelitian ini mencapai 6,1 ppm. Adsorbsi kitosan pada logam Fe dapat menurunkan kadar terlarut mencapai rata-rata 99,67% dari kadar awal. Kandungan gugus hidroksil pada kitosan menyebabkan terjadinya reaksi pembentukan senyawa hidroksida turunan dari logam besi terlarut. Senyawa besi hidroksida tersebut akan terpisah dari air dan membentuk endapan. Semakin besar nilai derajat deasetilasi maka akan semakin besar kandungan gugus hidroksil sehingga menyebabkan daya adsorbsi kitosan semakin meningkat.

Synthesis of Rare Earth Metal Oxides Based on Monasite Sand with pH Variations Anisa Indriawati; Herman Aldila; Verry Andre Fabiani
Stannum : Jurnal Sains dan Terapan Kimia Vol 2 No 2 (2020): Oktober 2020
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v2i2.1953

In the island of Bangka Belitung, the presence of monazite is quite abundant, monazite minerals contain rare earth metals. Rare Earth Metals are groups of elements that have similar properties, for example neodymium, cerium, lanthanum, and others. Rare earth metal applications are very potential in various fields. In this research, the synthesis of rare earth metals by sol gel method at pH variations of 5.5, 6.5 and 7.5 was carried out. In this case, only changes in the levels of P2O5, La2O3, CeO2, and Nd2O3 compounds were observed. The results showed an increase in levels of rare earth metals. This is indicated by the increase in La2O3 levels by 4,421% from the initial level at pH 7.5 CeO2 which has increased levels by 7,166% at pH 7.5, and Nd2O3 which has increased levels of 5.116% at pH 6.5. On the other hand, of P2O5 has decreased significantly (22.037%) Keyword: Monasite, Rare Earth, Sol Gel, pH

Pelatihan Pengajaran Fisika Berbasis Simulasi Menggunakan Perangkat Lunak PhET Bagi Guru IPA di Bangka sebagai Perangkat Laboratorium Virtual Yuant Tiandho; Rika Favoria Gusa; Anisa Indriawati; Herman Aldila; Widodo B. Kurniawan
Abimanyu : Jornal of Community Engagement Vol 1 No 2 (2020): August 2020
Publisher : Universitas Negeri Surabaya

Meskipun ilmu fisika merupakan salah satu ilmu yang sangat penting dalam pengembangan teknologi saat ini namun di mata mayoritas peserta didik masih dianggap sebagai ilmu yang sulit dan tidak menarik. Hal ini kemungkinan disebabkan oleh masih banyaknya guru yang hanya menerapkan metode ceramah ketika proses belajar mengajar fisika. Alternatif untuk mengatasi permasalahan tersebut adalah diterapkannya praktikum agar peserta didik dapat memiliki pengalaman langsung terkait konsep fisika yang ada. Namun, beberapa sekolah di Bangka tidak memiliki fasilitas laboratorium yang memadai sehingga kegiatan praktikum tidak dapat berjalan dengan baik atau bahkan tidak dapat dilaksanakan. Pada program pengabdian kepada masyarakat ini, dilakukan pelatihan penggunaan perangkat lunak PhET sebagai solusi laboratorium virtual. Penggunaan laboratorium virtual selain efisien dari segi biaya juga mudah untuk dilakukan dan memungkinkan peserta didik melakukan praktikum virtual secara mandiri. Setelah dilakukan kegiatan pelatihan mayoritas peserta memberikan respon positif terhadap penggunaan PhET dalam proses belajar mengajar. Selain itu, perangkat lunak PhET mudah digunakan.

Pengaruh Konsentrasi NaOH pada Proses Deasetilasi Kitin terhadap Derajat Deasetilasi Kitosan Herman Aldila; Atin Nuryadin; Desy Yuliana Dalimunthe
Jurnal Riset Fisika Indonesia Vol 1 No 2 (2021): Juni 2021
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Chitosan have been successfully produced from the dried shrimp home industry waste (Bangka, Indonesia). Extraction of chitosan was carried out in four steps: deproteinization, demineralization, decolorization and deacetylation of chitin. The effect of NaOH concentration on deacetylation process was studied. The results shown that the increase of NaOH concentration from 20% to 60%, the chitosan DD increased. The diffusion rate of OH- causes increment of OH- attack to the amino group thus realizing the effective deacetylation of chitin. The highest chitosan DD was up to 69.49% is achieved under the optimized conditions of this process and the occurrence of deacetylation structurally demonstrated by the Fourier transform infrared (FTIR) characterization.

Co-Authors Anisa Indriawati Asmar Asmar Atin Nuryadin Darman Saputra Deden Nurdandi Dera Selviani Desy Yuliana Dalimunthe Desy Yuliana Dalimunthe Endang Setyawati Hisyam Fadillah Ramadhani Fitri Afriani Haryono, Muhammad Budi Heni Pornawati Ineu Sulistiana Livia Livia Luna Febriani Megiyo Megiyo Megiyo Megiyo Rena Aprilianti Rika Favoria Gusa Riko Irwanto Robby Gus Mahardika Sisilia Jesika Pririzki Sito Enggiwanto Tri Kusmita Verry Andre Fabiani Wahri Sunanda Widodo B. Kurniawan Widodo Budi Kurniawan Widodo Budi Kurniawan Yekti Widyaningrum Yekti Widyaningrum Yuant Tiandho

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